Irbesartan and candesartan does not exist which one has more side effects, follow the doctor’s instructions to standardize the use of medication can be. Irbesartan, an ARB, is an angiotensin receptor blocker that blocks the production of angiotensin-converting enzyme, which serves to dilate vascular tissue and lower blood pressure levels. Adverse effects of Irbesartan include reactions such as dizziness, postural hypotension, dyspepsia, hyperkalemia, skeletal muscle pain or hypersensitivity. Candesartan is an angiotensin receptor antagonist that has the ability to dilate blood vessels, reduce vascular resistance and act as a blood pressure reducer, and is mainly used to treat essential hypertension. Adverse reactions to candesartan include angioedema, syncope, hyperkalemia or acute renal failure. These two do not exist which side effects are greater, the choice of drugs need to follow the doctor’s advice, choose the right drug for their own disease can be.